imageminJpegTran 插件旋转图像

问题描述

我正在做的是压缩我从文件中获得的缓冲区，然后再次将压缩的缓冲区写入内存。发生的情况是正方形和矩形图像被正确压缩，但垂直图像正在旋转。是否有任何选项可以传递给 imageminJpegtran 插件，以便图像保持不变，只是压缩？ 这是我的代码：

const fs = require("fs");
const imagemin = require("imagemin");
const imageminJpegtran = require('imagemin-jpegtran');
const imageminpngquant = require('imagemin-pngquant');

async function outputFile() {

    let imageBase64 = fs.readFileSync("test_ios.jpg",{encoding: "base64"})
    const butmap = Buffer.from(imageBase64,"base64")

    try {
        let compressedBuffer = await imagemin.buffer(butmap,{
            plugins: [
                imageminJpegtran(),imageminpngquant({
                    quality: [0.1,0.8]
                })
            ]
        });
    
    
        compressedBuffer = compressedBuffer.toString("base64");
        const compressedBitmap = Buffer.from(compressedBuffer,"base64")

        fs.writeFileSync("./test_ios_copy.jpg",compressedBitmap)
    } catch (error) {
        console.log(error)
    }
    
}

解决方法

我最终使用了另一个名为 imagemin-mozjpeg 的插件。 它允许在不旋转的情况下压缩图像。

const fs = require("fs");
const imagemin = require("imagemin");
const imageMozg = require("imagemin-mozjpeg");
const imageminPngquant = require('imagemin-pngquant');

async function outputFile() {

    let imageBase64 = fs.readFileSync("test_ios.jpg",{encoding: "base64"})
    const butmap = Buffer.from(imageBase64,"base64")

    try {
        let compressedBuffer = await imagemin.buffer(butmap,{
            plugins: [
                imageMozg({
                        quality: 75,progressive: true
                    }),imageminPngquant({
                    quality: [0.1,0.8]
                })
            ]
        });
    
    
        compressedBuffer = compressedBuffer.toString("base64");
        const compressedBitmap = Buffer.from(compressedBuffer,"base64")

        fs.writeFileSync("./test_ios_copy.jpg",compressedBitmap)
    } catch (error) {
        console.log(error)
    }
    
}